From MORSE@BNLAJC.BNL.GOVThu Sep 12 09:12:34 1996 Date: Thu, 12 Sep 1996 7:28:07 -0400 (EDT) From: "William M. Morse" To: stratos@bnl.gov, messier@buphy.bu.edu, curcio@bnl.gov, mizumach@ee.kagu.sut.ac.jp, scmag@lbl.gov, direttore@sns.it, roberts@BNLDAG.AGS.BNL.GOV, YIM@inp.nsk.su, grossmann@physi.uni-heidelberg.de Subject: Minutes of E821 Inflector meeting by Wuzheng Meng. From: SMTP%"MENG@BNLDAG.AGS.BNL.GOV" 11-SEP-1996 19:05:50.55 To: MORSE CC: Subj: minutes of inflector meeting 9/11/96 Date: Wed, 11 Sep 1996 19:05:27 -0400 (EDT) From: MENG@BNLDAG.AGS.BNL.GOV Subject: minutes of inflector meeting 9/11/96 To: STILLMAN@STILLMAN.AGS.BNL.GOV, dhawan@yalphy.physics.yale.edu, woodle@ad1.ags.bnl.gov Cc: roberts@buphyc.bu.edu, morse@bnlarm.bnl.gov, hughes@yalph2.physics.yale.edu, akira@kekvax.kek.jp Message-id: <01I9D344CZIQ00036A@BNLDAG.AGS.BNL.GOV> X-VMS-To: JIA, PAI, SANDBERG, MATTHIAS, TALLERICO, BENANTE, STILLMAN, IN%"dhawan@yalphy.physics.yale.edu" X-VMS-Cc: @INF MIME-version: 1.0 Content-type: TEXT/PLAIN; CHARSET=US-ASCII Content-transfer-encoding: 7BIT Minutes of the Inflector Meeting W. Meng September 11, 1996 Attending: L. Addessi, J. Benante, H. Brown, J. Cullen, S. Dhawan, L. Jia, W. Meng, W. Morse, C. Pai, M. Perdekamp, J. Sandberg, T. Tallerico The meeting reviewed the status of the test preparation. 1. Cryo system for the inflector (L. Jia): About 90% of the parts have been machined; Gas-cooled leads have been assembled. The major jobs to be done are: (1)valve box; (2)lead box; (3)transfer lines (including the 100" long connection from the lead box to the inflector). By the end of Sept, Cryo group will have more man power available after complete EVA magnet. Consider the size of the work, the expected cool-down date will be Nov.4, 1996. 2. Cryo Control (T. Tallerico): Graphics are nearly done; temperature monitoring to be tested. There is some read-out problem for the Hall probe (will ask someone to look into it). Need one student to help the programming (W. Morse will make an effort). 3. Magnet installation (C. Pai): Inflector was installed into cryostat a few times, to optimize the steering and shifting options. Inflector (together with the cryostat) was installed into the ring successfully last week (9/5), and moved out (9/6) before the ring was powered for shimming. Due to the transverse force on the inflector, downstream end support need to be modified. It will take 2 weeks; by the end of Sept, inflector cryostat will be ready for further connection work ( cooling tubes and current leads through the back). 4. Power Supply (J. Sandberg): The power supply has been run and tested in the shorted cable condition. The terminal voltage is 6.3 V with the maximum current of 2970 A. The PLC has been installed. All provisions for computer control have been added. Datacon control card test will be in the middle of Sept. Quench detection input and test will be in early Oct. 5. Quench Electronics and Monitoring (M.G_Perdekamp and S.Dhawan): Joe Geller and A. Curcio are working on the Quench Electronics --- Crates, Analog input boards, digital board and meter relay are done. analog computer boards will be done next week; cables will be run by the 3rd week of Sept; buffer boards will be done about 9/25; the system test will be in the end of this month. Quench monitor module will be done by Satish this week. Kim will help Matthias working on the software this week. The goal for the Oct-Nov. test is to extend existing monitor program to read 2 more Aurora channels., and to establish "OR" quench trigger from two magnets. Matthias will be in charge the monitoring and recording test by the end of Oct. 6. Following issues were discussed in the meeting: (1) We might need to make communication between PS and Quench Monitor system, in case the noise triggers the quench recording system while the power supply is still running. (Matthias) (2) The first cool down test for the inflector could be in the ring but outside the gap ( inflector may sit on the moving stand), so that we can examine the cryostat walls. (C. Pai) Next meeting will be in early October 1996.